so my Kobe has had this problem since he was little, though it has become more frequent. In mornings he will sometimes wake up suddenly and throw up a little bit of yellow bile. It used to happen every few weeks but recently it has happened several times a week. He seems to be fine afterward and is hungry for breakfast a few hours later. Has anyone experienced this before? I am hesitant to take him to the vet since they will recommend a bunch of test and I do not think he has worms or anything.

Yellow bile is pretty common as long as its not frequent. I find that when their stomachs are very empty, that bile can happen. Does your beag eat twice a day or once? 2 meals a day with a few treats in between keep my girls from having that issue too often. I call it "the yack".